Hi, Im finally seeing a bit of light with my non standard delta. Due to some miscalculation I have 400mm arms for a base triangle of 630mm and a radius of 382mm. I managed to manually calibrate it to a rather small print size of 150mm diameter. Endstops and radius are calibrated up to one paper thickness. The one thing that prevents me from printing is actually that when I command 10mm in any XY direction it actually travels 45mm. The z height moves normally and I checked that the carriages actually move the right z distance. Any ideas what causes this scaling factor? https://reprap.org/forum/read.php?178,496543,496543#msg-496543 Thu, 13 Aug 2026 02:02:50 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?178,496543,496666#msg-496666 https://reprap.org/forum/read.php?178,496543,496666#msg-496666
But I just figured out that the marlin mainbranch has correct scaling contrary to rich cattels marlin. I had a weird error with dimensions before, so Im not sure if I messed up a setting. Im calibration the normal marlin version now. That should work.]]> sungod3k Delta Machines Tue, 14 Apr 2015 06:43:08 -0400 https://reprap.org/forum/read.php?178,496543,496563#msg-496563 https://reprap.org/forum/read.php?178,496543,496563#msg-496563
What command do you run to move the nozzle?
Have you tried G29 auto level probe?

Manual calibration requires precise movement of X, Y, and Z axis.

Four points of manual calibration
- Center (0, 0)
- X / Y / Z tower point

The coordinate (x,y) of each tower point is derived by
x = Build_radius * cos(theta)
y = Build_radius * sin(theta)

Angle of X tower = 210 degree
Angle of Y tower = 330 degree
Angle of Z tower = 90 degree

If the build diameter is 150 mm, Build_radius is 75 mm.
(x,y) coordinate of X tower is
x = 75.00 * cos(210) = -64.95
y = 75.00 * sin(210) = -37.50

Y tower is (64.95, -37.50)
Z tower is (0.00, 75.00)

The calibration step is iterations of
[Center -> X tower -> Y tower -> Z tower] -> check the nozzle height and adjust Delta Radius -> [Four point check]]]> janpenguin Delta Machines Mon, 13 Apr 2015 21:49:44 -0400 https://reprap.org/forum/read.php?178,496543,496543#msg-496543 https://reprap.org/forum/read.php?178,496543,496543#msg-496543
Im finally seeing a bit of light with my non standard delta. Due to some miscalculation I have 400mm arms for a base triangle of 630mm and a radius of 382mm. I managed to manually calibrate it to a rather small print size of 150mm diameter. Endstops and radius are calibrated up to one paper thickness.

The one thing that prevents me from printing is actually that when I command 10mm in any XY direction it actually travels 45mm. The z height moves normally and I checked that the carriages actually move the right z distance.
Any ideas what causes this scaling factor?]]> sungod3k Delta Machines Mon, 13 Apr 2015 19:12:08 -0400